Home / 8,880.18-13,247.48-8,638.85

Finding the Fourth Proportional to 8,880.18, 13,247.48 and 8,638.85

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Solution

The fourth proportional to 8,880.18, 13,247.48 and 8,638.85 is: 12,887.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,880.18 : 13,247.48 = 8,638.85 : x
  2. Step 2: Convert to fraction form
    8,880.18/13,247.48 = 8,638.85/x
  3. Step 3: Cross multiply
    8,880.18x = 13,247.48 × 8,638.85
  4. Step 4: Simplify right side
    8,880.18x = 114,442,947.96
  5. Step 5: Solve for x
    x = 114,442,947.96/8,880.18
  6. Step 6: Final answer
    x = 12,887.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.